With a single tooth from an ancient human skeleton found in Germany, scientists have now created the most complete genetic picture yet of the bacteria that caused the world's first plague pandemic. The Justinianic Plague killed 50 million people from the sixth to eighth centuries, and was caused by the...
A living desert (Image credit: Linda & Dr. Dick Buscher)The North American deserts are teeming with mammals that are both colorful and uniquely adapted to the harsh environmental conditions. Many such mammals have learned to not only survive but thrive when living close to humans in desert communities. This urban...